Mercurial > 510Connectbot
annotate src/com/five_ten_sg/connectbot/transport/TN5250.java @ 47:a3fd10a8c0de tn5250
start tn5250 integration
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Wed, 11 Jun 2014 10:03:40 -0700 |
| parents | 34ce32c4e807 |
| children | 8887bff45dee |
| rev | line source |
|---|---|
| 11 | 1 /* |
| 2 * 510ConnectBot | |
| 3 * Copyright 2014 Carl Byington | |
| 4 * | |
| 5 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 * you may not use this file except in compliance with the License. | |
| 7 * You may obtain a copy of the License at | |
| 8 * | |
| 9 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 * | |
| 11 * Unless required by applicable law or agreed to in writing, software | |
| 12 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 * See the License for the specific language governing permissions and | |
| 15 * limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 package com.five_ten_sg.connectbot.transport; | |
| 19 | |
| 20 import java.io.IOException; | |
| 21 import java.io.InputStream; | |
| 22 import java.io.OutputStream; | |
| 23 import java.net.Socket; | |
| 24 import java.net.SocketException; | |
| 13 | 25 import java.net.UnknownHostException; |
| 11 | 26 import java.util.List; |
| 27 import java.util.Map; | |
| 13 | 28 import java.util.regex.Matcher; |
| 29 import java.util.regex.Pattern; | |
| 11 | 30 |
| 12 | 31 import org.tn5250j.framework.tn5250.Screen5250; |
| 32 import org.tn5250j.framework.tn5250.tnvt; | |
| 33 | |
| 13 | 34 import com.five_ten_sg.connectbot.R; |
| 11 | 35 import com.five_ten_sg.connectbot.bean.HostBean; |
| 36 import com.five_ten_sg.connectbot.bean.PortForwardBean; | |
| 37 import com.five_ten_sg.connectbot.service.TerminalBridge; | |
|
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38 import com.five_ten_sg.connectbot.service.TerminalKeyListener; |
| 11 | 39 import com.five_ten_sg.connectbot.service.TerminalManager; |
| 40 import com.five_ten_sg.connectbot.util.HostDatabase; | |
| 41 import android.content.Context; | |
| 42 import android.net.Uri; | |
| 13 | 43 import android.util.Log; |
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44 import de.mud.terminal.vt320; |
| 11 | 45 |
| 46 | |
| 47 /** | |
| 48 * @author Carl Byington | |
| 49 * | |
| 50 */ | |
| 51 public class TN5250 extends AbsTransport { | |
| 52 private static final String PROTOCOL = "tn5250"; | |
| 53 private static final String TAG = "ConnectBot.tn5250"; | |
| 54 private static final int DEFAULT_PORT = 23; | |
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55 |
| 11 | 56 private Screen5250 screen52; |
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57 private tnvt handler = null; |
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58 private Socket socket; |
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59 private boolean connected = false; |
| 11 | 60 |
| 12 | 61 static final Pattern hostmask; |
| 62 static { | |
| 63 hostmask = Pattern.compile("^([0-9a-z.-]+)(:(\\d+))?$", Pattern.CASE_INSENSITIVE); | |
| 64 } | |
| 65 | |
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66 |
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67 class vt320x5250 extends vt320 { |
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68 @Override |
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69 public void debug(String s) { |
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70 Log.d(TAG, s); |
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71 } |
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72 @Override |
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73 public void write(byte[] b) { |
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74 } |
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75 @Override |
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76 public void write(int b) { |
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77 } |
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78 // bridge.monitor placement of new characters |
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79 @Override |
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80 public void putChar(int c, int l, char ch, int attributes) { |
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81 if (bridge.monitor != null) bridge.monitor.screenChanged(l, c); |
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82 super.putChar(c, l, ch, attributes); |
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83 } |
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84 @Override |
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85 public void setCursorPosition(int c, int l) { |
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86 if (bridge.monitor != null) bridge.monitor.cursorMove(l, c); |
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87 super.setCursorPosition(c, l); |
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88 } |
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89 }; |
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90 |
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91 |
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92 class Terminal5250KeyListener extends TerminalKeyListener { |
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93 public Terminal5250KeyListener(TerminalManager manager, |
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94 TerminalBridge bridge, |
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95 vt320 buffer, |
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96 String encoding) { |
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97 super(manager, bridge, buffer, encoding); |
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98 } |
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99 }; |
| 12 | 100 |
| 11 | 101 public TN5250() { |
| 102 super(); | |
| 103 } | |
| 104 | |
| 105 | |
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106 /** |
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107 * @return protocol part of the URI |
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108 */ |
| 11 | 109 public static String getProtocolName() { |
| 110 return PROTOCOL; | |
| 111 } | |
| 112 | |
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113 |
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114 /** |
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115 * Encode the current transport into a URI that can be passed via intent calls. |
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116 * @return URI to host |
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117 */ |
| 12 | 118 public Uri getUri(String input) { |
| 119 Matcher matcher = hostmask.matcher(input); | |
| 120 | |
| 121 if (!matcher.matches()) | |
| 122 return null; | |
| 123 | |
| 124 StringBuilder sb = new StringBuilder(); | |
| 125 sb.append(PROTOCOL) | |
| 126 .append("://") | |
| 127 .append(matcher.group(1)); | |
| 128 String portString = matcher.group(3); | |
| 129 int port = DEFAULT_PORT; | |
| 130 | |
| 131 if (portString != null) { | |
| 132 try { | |
| 133 port = Integer.parseInt(portString); | |
| 134 | |
| 135 if (port < 1 || port > 65535) { | |
| 136 port = DEFAULT_PORT; | |
| 137 } | |
| 138 } | |
| 139 catch (NumberFormatException nfe) { | |
| 140 // Keep the default port | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 if (port != DEFAULT_PORT) { | |
| 145 sb.append(':'); | |
| 146 sb.append(port); | |
| 147 } | |
| 148 | |
| 149 sb.append("/#") | |
| 150 .append(Uri.encode(input)); | |
| 151 Uri uri = Uri.parse(sb.toString()); | |
| 152 return uri; | |
| 11 | 153 } |
| 154 | |
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155 |
| 11 | 156 /** |
| 157 * Causes transport to connect to the target host. After connecting but before a | |
| 158 * session is started, must call back to {@link TerminalBridge#onConnected()}. | |
| 159 * After that call a session may be opened. | |
| 160 */ | |
| 161 @Override | |
| 162 public void connect() { | |
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163 screen52 = new Screen5250(); |
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164 handler = new tnvt(screen52, true, false, bridge, manager); |
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165 handler.setSSLType("TLS"); |
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166 screen52.setVT(handler); |
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167 screen52.setBuffer(buffer); |
| 23 | 168 connected = handler.connect(host.getHostname(), host.getPort()); |
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169 if (connected) bridge.onConnected(); |
| 11 | 170 } |
| 171 | |
| 172 | |
| 173 /** | |
| 174 * Checks if read() will block. If there are no bytes remaining in | |
| 175 * the underlying transport, return true. | |
| 176 */ | |
| 177 @Override | |
| 178 public boolean willBlock() { | |
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179 // we don't use a relay thread between the transport and the vt320 buffer |
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180 return true; |
| 11 | 181 } |
| 182 | |
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183 |
| 11 | 184 /** |
| 185 * Reads from the transport. Transport must support reading into a byte array | |
| 186 * <code>buffer</code> at the start of <code>offset</code> and a maximum of | |
| 187 * <code>length</code> bytes. If the remote host disconnects, throw an | |
| 188 * {@link IOException}. | |
| 189 * @param buffer byte buffer to store read bytes into | |
| 190 * @param offset where to start writing in the buffer | |
| 191 * @param length maximum number of bytes to read | |
| 192 * @return number of bytes read | |
| 193 * @throws IOException when remote host disconnects | |
| 194 */ | |
| 195 public int read(byte[] buffer, int offset, int length) throws IOException { | |
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196 // we don't use a relay thread between the transport and the vt320 buffer |
| 11 | 197 return 0; |
| 198 } | |
| 199 | |
| 200 | |
| 201 /** | |
| 202 * Writes to the transport. If the host is not yet connected, simply return without | |
| 203 * doing anything. An {@link IOException} should be thrown if there is an error after | |
| 204 * connection. | |
| 205 * @param buffer bytes to write to transport | |
| 206 * @throws IOException when there is a problem writing after connection | |
| 207 */ | |
| 208 public void write(byte[] buffer) throws IOException { | |
| 209 } | |
| 210 | |
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211 |
| 11 | 212 /** |
| 213 * Writes to the transport. See {@link #write(byte[])} for behavior details. | |
| 214 * @param c character to write to the transport | |
| 215 * @throws IOException when there is a problem writing after connection | |
| 216 */ | |
| 217 public void write(int c) throws IOException { | |
| 218 } | |
| 219 | |
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220 |
| 11 | 221 /** |
| 222 * Flushes the write commands to the transport. | |
| 223 * @throws IOException when there is a problem writing after connection | |
| 224 */ | |
| 225 public void flush() throws IOException { | |
| 226 } | |
| 227 | |
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228 |
| 11 | 229 /** |
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230 * Closes the connection to the terminal. |
| 11 | 231 */ |
| 232 public void close() { | |
| 13 | 233 handler.disconnect(); |
| 11 | 234 connected = false; |
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235 bridge.dispatchDisconnect(false); |
| 11 | 236 } |
| 237 | |
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238 |
| 11 | 239 /** |
| 240 * Tells the transport what dimensions the display is currently | |
| 241 * @param columns columns of text | |
| 242 * @param rows rows of text | |
| 243 * @param width width in pixels | |
| 244 * @param height height in pixels | |
| 245 */ | |
| 246 @Override | |
| 247 public void setDimensions(int columns, int rows, int width, int height) { | |
| 248 // do nothing | |
| 249 } | |
| 250 | |
| 251 | |
| 252 @Override | |
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253 public vt320 getTransportBuffer() { |
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254 buffer = new vt320x5250(); |
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255 return setupTransportBuffer(); |
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256 } |
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257 |
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258 |
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259 @Override |
| 11 | 260 public int getDefaultPort() { |
| 261 return DEFAULT_PORT; | |
| 262 } | |
| 263 | |
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264 |
| 11 | 265 @Override |
| 266 public boolean isConnected() { | |
| 267 return connected; | |
| 268 } | |
| 269 | |
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270 |
| 11 | 271 @Override |
| 272 public boolean isSessionOpen() { | |
| 273 return connected; | |
| 274 } | |
| 275 | |
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276 |
| 11 | 277 @Override |
| 278 public boolean isAuthenticated() { | |
| 279 return connected; | |
| 280 } | |
| 281 | |
| 282 | |
| 283 @Override | |
| 284 public String getDefaultNickname(String username, String hostname, int port) { | |
| 285 if (port == DEFAULT_PORT) { | |
| 286 return String.format("%s", hostname); | |
| 287 } | |
| 288 else { | |
| 289 return String.format("%s:%d", hostname, port); | |
| 290 } | |
| 291 } | |
| 292 | |
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293 |
| 11 | 294 @Override |
| 295 public void getSelectionArgs(Uri uri, Map<String, String> selection) { | |
| 296 selection.put(HostDatabase.FIELD_HOST_PROTOCOL, PROTOCOL); | |
| 297 selection.put(HostDatabase.FIELD_HOST_NICKNAME, uri.getFragment()); | |
| 298 selection.put(HostDatabase.FIELD_HOST_HOSTNAME, uri.getHost()); | |
| 299 int port = uri.getPort(); | |
| 300 | |
| 301 if (port < 0) | |
| 302 port = DEFAULT_PORT; | |
| 303 | |
| 304 selection.put(HostDatabase.FIELD_HOST_PORT, Integer.toString(port)); | |
| 305 } | |
| 306 | |
| 307 | |
| 308 @Override | |
| 309 public HostBean createHost(Uri uri) { | |
| 310 HostBean host = new HostBean(); | |
| 311 host.setProtocol(PROTOCOL); | |
| 312 host.setHostname(uri.getHost()); | |
| 313 int port = uri.getPort(); | |
| 314 | |
| 315 if (port < 0) | |
| 316 port = DEFAULT_PORT; | |
| 317 | |
| 318 host.setPort(port); | |
| 319 String nickname = uri.getFragment(); | |
| 320 | |
| 321 if (nickname == null || nickname.length() == 0) { | |
| 322 host.setNickname(getDefaultNickname(host.getUsername(), | |
| 323 host.getHostname(), host.getPort())); | |
| 324 } | |
| 325 else { | |
| 326 host.setNickname(uri.getFragment()); | |
| 327 } | |
| 328 | |
| 329 return host; | |
| 330 } | |
| 331 | |
| 332 | |
| 12 | 333 public String getFormatHint(Context context) { |
| 11 | 334 return String.format("%s:%s", |
| 335 context.getString(R.string.format_hostname), | |
| 336 context.getString(R.string.format_port)); | |
| 337 } | |
| 338 | |
| 339 | |
| 340 @Override | |
| 341 public boolean usesNetwork() { | |
| 342 return true; | |
| 343 } | |
|
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344 |
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345 |
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346 @Override |
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347 public boolean needsRelay() { |
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348 // we don't use a relay thread between the transport and the vt320 buffer |
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349 return false; |
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350 } |
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351 |
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352 public TerminalKeyListener getTerminalKeyListener() { |
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353 return new Terminal5250KeyListener(manager, bridge, buffer, host.getEncoding()); |
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354 } |
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355 |
| 11 | 356 } |